首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and gree
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and gree
admin
2012-09-11
35
问题
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and green vegetables. It is only when people try to live on a very restricted diet that it is necessary to make special provision to supply the missing vitamins.
An example of the dangers of a restricted diet may be seen in the disease known as "beri-beri". It used to distress large numbers of Eastern peoples who lived mainly on rice. In the early years of this century, a scientist named Eijkman was trying to discover the cause of "beri-beri". At first he thought it was caused by a germ. He was working in a Japanese hospital, where the patients were fed on polished rice which had the outer husk (外壳) removed from the grain. It was thought this would be easier for weak and sick people to digest.
Eijkman thought his germ theory was confirmed when he noticed the chickens in the hospital yard, which were fed on leftovers (剩饭) from the patients’ plates, were also showing signs of the disease. He then tried to isolate the germ, but his experiments were interrupted by a hospital official, who declared that the polished rice, even though left over by the patients, was too good for chickens. It should be recooked for the patients, and the chickens should be fed on cheap rice with the outer layer still on the grain.
Eijkman noticed that the chickens began to recover on the new diet. He began to consider the possibility that eating unpolished rice somehow prevented or cured "beriberi"—even that a lack of some element in the husk might be the cause of the disease. Indeed this was the case. The element needed to prevent "beri-beri" was shortly afterwards isolated from rice husks and is now known as vitamin B. Nowadays, this terrible disease is much less common thanks to our knowledge of vitamins.
The chickens Eijkman noticed in the hospital yard______.
选项
A、couldn’t digest the polished rice
B、proved "beri-beri" is caused by germs
C、were later cooked for the patients’ food
D、were suffering from "beri-beri"
答案
D
解析
本题考查考生对文章细节的理解。A项未提到。B项是对文章第三段第一句话的曲解,这句话说,艾克曼开始的时候认为鸡吃了精米后生病是因为细菌的传染,但是后来第四段说,当鸡吃了糙米以后逐渐变得健康,这使得艾克曼放弃了自己之前的理论,开始觉得这种疾病是由于精米中缺乏某种物质造成的。C项未提及。因此选D。
转载请注明原文地址:https://kaotiyun.com/show/jsDO777K
0
成人本科学位英语
相关试题推荐
Accordingtowesternculture,you______askawomanherage;itisimpolite.
Industrialsafetydoesnotjusthappen.Companies【C1】______lowaccidentratesplantheirsafetyprograms,workhardtoorganize
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,
Inthisexperimenttheywerewakenedseveraltimesduringthenightandaskedtoreportwhatthey______.
Withthepossibleexceptionofequalrights,perhapsthemost【C1】______issueacrosstheUnitedStatestodayisthedeathpenalt
AuniquelaboratoryattheUniversityofChicagoisbusyonlyatnight.Itisadream【C1】______whereresearchersareatworkstu
HavingpassedTOEFL,hewas______fromtakingEnglishcourses.
Collegehasmanysocialattractions,someofwhichcanbedistractions.Sports,concerts,parties,anddormitorybull(废话)session
随机试题
国际服务贸易壁垒具体划分为()
急诊室抢救药品、器材的四固定是指()
下列各种晶体中,熔化时需破坏共价键的是()。
建设项目负责人的()职责是指在其授权范围内对建设项目的实施及时正确地做出决策。
在资产证券化中,发行人从银行借人信用增级所需的资金,并将其投资于高信用等级的短期商业票据。这种信用增级措施是()。
税收的效率原则包括()。
一般资料:求助者,男性,56岁,国家某部委巡视员。案例介绍:求助者原是某部局长,由于年龄的原因,丰年前改任非领导职务。原来每天非常繁忙,总有处理不完的事情。现在自己分管的事情明显比以前少了。对新局长的思想有些不理解,但又不好干涉剐人的工作,心里很
为进程分配连续内存的是()。
根据我国宪法的规定,下列关于宪法监督制度的表述,错误的是()。
设3阶矩阵A=,若矩阵A的伴随矩阵的秩等于1,则必有().
最新回复
(
0
)